Patents by Inventor Raimund Felder

Raimund Felder has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20110313207
    Abstract: The invention relates to a process for distillative workup of a methanol/water mixture, in which a methanol/water mixture is added to a distillation column (1), an essentially methanol-comprising vapor stream is withdrawn at the top of the distillation column (1) and an essentially water-comprising bottom stream at the bottom of the distillation column (1), at least a portion of the essentially methanol-comprising vapor stream is compressed and the compressed vapor stream is added as heating vapor to an evaporator (11) in which at least a portion of the methanol/water mixture to be separated is evaporated.
    Type: Application
    Filed: February 17, 2010
    Publication date: December 22, 2011
    Inventors: Gerd Kaibel, Tilman Sirch, Raimund Felder, Josef Guth
  • Patent number: 7589046
    Abstract: In a process for the thermal treatment of the precursor material of a catalytically active material in a rotary tube furnace through which a gas stream flows, at least a proportion of the gas stream flowing through the rotary tube furnace is circulated, and the associated rotary tube furnace apparatus and tube-bundle reactors for the partial gas-phase oxidation of acrolein to acrylic acid are loaded with catalysts whose catalytically active material is obtainable by the process for the thermal treatment.
    Type: Grant
    Filed: May 12, 2004
    Date of Patent: September 15, 2009
    Assignee: BASF Aktiengesellschaft
    Inventors: Martin Dieterle, Wolfgang Juergen Poepel, Silke Berndt, Raimund Felder, Signe Unverricht, Klaus Joachim Mueller-Engel
  • Publication number: 20090171117
    Abstract: A catalyst suitable for the gas-phase oxidation of organic compounds to ?,?-unsaturated aldehydes and/or carboxylic acids and having an active phase comprising a multimetal oxide material is prepared by a process in which a particulate catalyst precursor which contains oxides and/or compounds of the elements other than oxygen which constitute the multimetal oxide material, which compounds can be converted into oxides, is prepared and said catalyst precursor is converted by calcination into a catalytically active form, wherein a stream of the particulate catalyst precursor is passed at substantially constant speed through at least one calcination zone at constant temperature for calcination.
    Type: Application
    Filed: March 2, 2009
    Publication date: July 2, 2009
    Applicant: BASF Aktiengesellschaft
    Inventors: Heiko Arnold, Signe Unverricht, Raimund Felder, Klaus Harth, Klaus Joachim Muller-Engel
  • Publication number: 20070032680
    Abstract: In a process for the heterogeneously catalyzed gas-phase partial oxidation of precursor compounds of (meth)acrylic acid over a fixed catalyst bed which contains, as a catalyst, a mixed oxide active material shaped into a geometric body, the geometric body is a geometric base body into whose surface a cavity has been introduced.
    Type: Application
    Filed: May 31, 2006
    Publication date: February 8, 2007
    Applicant: BASF Aktiengesellschaft
    Inventors: Raimund Felder, Signe Unverricht, Heiko Arnold, Jochen Petzoldt
  • Publication number: 20070032377
    Abstract: A process for preparing shaped catalyst bodies whose active composition is a multielement oxide, in which a finely divided precursor mixture is shaped to a desired geometry with addition of boron nitride and subsequently treated thermally.
    Type: Application
    Filed: August 4, 2006
    Publication date: February 8, 2007
    Applicant: BASF Aktiengesellschaft
    Inventors: Hartmut Hibst, Raimund Felder, Heiko Arnold, Andreas Raichle, Klaus Muller-Engel
  • Patent number: 7129195
    Abstract: The invention relates to a method for the heterogenically catalyed gas-phase partial oxidation of precursor compounds of (meth)acrylic acid in a fixed catalyst bed, containing as the catalyst an activated mass of mixed oxide, shaped to form a geometric body. Said geometric body is a geometric base body, into whose surface a cavity is incorporated.
    Type: Grant
    Filed: January 12, 2002
    Date of Patent: October 31, 2006
    Assignee: BASF Aktiengesellschaft
    Inventors: Raimund Felder, Signe Unverricht, Heiko Arnold, Jochen Petzoldt
  • Patent number: 7060649
    Abstract: Disclosed is a method for producing a catalyst containing vanadium, phosphorus, and oxygen, which is used for oxidizing the gas phase of a hydrocarbon having at least four carbon atoms to maleic anhydride. According to the inventive method, a corresponding catalyst precursor which contains vanadium, phosphorus, and oxygen and is provided with particles having an average diameter of at least 2 mm is converted into a catalytically active form by means of calcination, and a flow of the catalyst precursor is transported on a conveyor belt across at least one calcination area over a distance 1n at an essentially steady speed in order to be calcinated. The variation over time of the gas temperature in relation to the set point value amounts to ?5° C.
    Type: Grant
    Filed: March 12, 2003
    Date of Patent: June 13, 2006
    Assignee: BASF Aktiengesellschaft
    Inventors: Jens Weiguny, Sebastian Storck, Mark Duda, Cornelia Dobner, Raimund Felder
  • Publication number: 20060099103
    Abstract: A novel metal injection molding material contains a) from 40 to 70% by volume of metal powder, including at least 50% by weight, based on the total amount of metal, of an iron-containing powder, at least 90% by weight, based on the amount of this iron-containing powder, of the particles of which have an effective diameter of at least 40 micrometers, b) from 30 to 60% by volume of a thermoplastic binder and c) from 0 to 5% by volume of a dispersant and/or other assistants. This injection molding material is shaped by injection molding, the injection molded parts are freed from the binder and said parts freed from the binder are sintered.
    Type: Application
    Filed: October 21, 2003
    Publication date: May 11, 2006
    Applicant: BASF AKTIENGESELLSCHAFT
    Inventors: Hans Wohlfromm, Raimund Felder, Johan Maat, Martin Blomacher
  • Publication number: 20050153834
    Abstract: Disclosed is a method for producing a catalyst containing vanadium, phosphorus, and oxygen, which is used for oxidizing the gas phase of a hydrocarbon having at least four carbon atoms to maleic anhydride. According to the inventive method, a corresponding catalyst precursor which contains vanadium, phosphorus, and oxygen and is provided with particles having an average diameter of at least 2 mm is converted into a catalytically active form by means of calcination, and a flow of the catalyst precursor is transported on a conveyor belt across at least one calcination area over a distance ln at an essentially steady speed in order to be calcinated. The variation over time of the gas temperature in relation to the set point value amounts to ?5 ° C.
    Type: Application
    Filed: March 12, 2003
    Publication date: July 14, 2005
    Inventors: Jens Weiguny, Sebastian Storck, Mark Duda, Cornelia Dobner, Raimund Felder
  • Patent number: 6881702
    Abstract: A catalyst suitable for the gas-phase oxidation of organic compounds to ?,?-unsaturated aldehydes and/or carboxylic acids and having an active phase comprising a multimetal oxide material is prepared by a process in which a particulate catalyst precursor which contains oxides and/or compounds of the elements other than oxygen which constitute the multimetal oxide material, which compounds can be converted into oxides, is prepared and said catalyst precursor is converted by calcination into a catalytically active form, wherein a stream of the particulate catalyst precursor is passed at substantially constant speed through at least one calcination zone at constant temperature for calcination.
    Type: Grant
    Filed: September 20, 2001
    Date of Patent: April 19, 2005
    Assignee: BASF Aktiengesellschaft
    Inventors: Heiko Arnold, Signe Unverricht, Raimund Felder, Klaus Harth, Klaus Joachim Müller-Engel
  • Publication number: 20040245681
    Abstract: In a process for the thermal treatment of the precusor material of a catalytically active material in a rotary tube furnace through which a gas stream flows, at least a proportion of the gas stream flowing through the rotary tube furnace is circulated, and the associated rotary tube furnace apparatus and tube-bundle reactors for the partial gas-phase oxidation of acrolein to acrylic acid are loaded with catalysts whose catalytically active material is obtainable by the process for the thermal treatment.
    Type: Application
    Filed: May 12, 2004
    Publication date: December 9, 2004
    Applicant: BASF Aktiengesellschaft
    Inventors: Martin Dieterle, Wolfgang Jurgen Popel, Silke Berndt, Raimund Felder, Signe Unverricht, Klaus Joachim Muller-Engel
  • Patent number: 6794539
    Abstract: In a process for preparing a multiplephase multimetal oxide composition comprising Mo, V, Cu and, if desired, further elements, at least one phase is preformed separately and dispersed in a plastically deformable precursor composition of a further phase. The mixture is dried and calcined. The multimetal oxide composition is suitable as active composition of catalysts for the catalytically oxidation of organic compounds in the gas phase, in particular for the oxidation of acrolein to acrylic acid.
    Type: Grant
    Filed: March 17, 2003
    Date of Patent: September 21, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Signe Unverricht, Raimund Felder, Heiko Arnold, Jochen Petzoldt
  • Publication number: 20040054222
    Abstract: The invention relates to a method for the heterogenically catalysed gas-phase partial oxidation of precursor compounds of (meth)acrylic acid in a fixed catalyst bed, containing as the catalyst an activated mass of mixed oxide, shaped to form a geometric body. Said geometric body is a geometric base body, into whose surface a cavity is incorporated.
    Type: Application
    Filed: July 15, 2003
    Publication date: March 18, 2004
    Inventors: Raimund Felder, Signe Unverricht, Heiko Arnold, Jochen Petzoldt
  • Publication number: 20040034249
    Abstract: A catalyst suitable for the gas-phase oxidation of organic compounds to &agr;,&bgr;-unsaturated aldehydes and/or carboxylic acids and having an active phase comprising a multimetal oxide material is prepared by a process in which a particulate catalyst precursor which contains oxides and/or compounds of the elements other than oxygen which constitute the multimetal oxide material, which compounds can be converted into oxides, is prepared and said catalyst precursor is converted by calcination into a catalytically active form, wherein a stream of the particulate catalyst precursor is passed at substantially constant speed through at least one calcination zone at constant temperature for calcination.
    Type: Application
    Filed: March 14, 2003
    Publication date: February 19, 2004
    Inventors: Heiko Arnold, Signe Unverricht, Raimund Felder, Klaus Harth, Klaus Joachim Muller-Engel
  • Publication number: 20030181761
    Abstract: The invention relates to a method for producing a multiple-phase multi-metal oxide material that contains Mo, V, Cu and, optionally, other elements. According to the invention, at least one phase is separately pre-formed and is dispersed in a plastically deformable precursor material of another phase. The mixture is then dried and calcined. The multi-metal oxide material is suited for use as an active material of catalysts for catalytically oxidizing organic compounds in the gas phase, in particular, for oxidizing acrolein into acrylic acid.
    Type: Application
    Filed: March 17, 2003
    Publication date: September 25, 2003
    Inventors: Signe Unverricht, Raimund Felder, Heiko Arnold, Jochen Petzoldt
  • Patent number: 6518220
    Abstract: Shaped catalysts for heterogeneously catalyzed reactions are in the form of hollow cylinders or annular tablets whose end faces are rounded both to the outer edge and to the edge of the central hole, i.e. have no right-angled edges.
    Type: Grant
    Filed: February 14, 2001
    Date of Patent: February 11, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Christian Walsdorff, Otto Hofstadt, Raimund Felder, Ruprecht Meissner, Klaus Harth
  • Patent number: 6383976
    Abstract: The multimetal oxide materials essentially consisting of Mo12BiaX1bFecX2dX3eOy  (I) where: X1 is Co and/or Ni, X2 is Si and/or Al, X3 is an alkali metal, 0.3≦a≦1, 2≦b≦10, 0.5≦c≦10, 0≦d≦10, 0≦e≦0.5 and y is the absolute value of the number which, assuming charge neutrality, is obtained from the sum of the valences and the stoichiometric coefficients of the other elements, the crystalline fractions containing, in addition to &bgr;-X1MoO4 as the main component, Fe2(MoO4)3 as a secondary component and no MoO3.
    Type: Grant
    Filed: December 2, 1999
    Date of Patent: May 7, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Heiko Arnold, Klaus Harth, Hans-Peter Neumann, Ulrich Hammon, Raimund Felder
  • Publication number: 20010029235
    Abstract: Shaped catalysts for heterogeneously catalyzed reactions are in the form of hollow cylinders or annular tablets whose end faces are rounded both to the outer edge and to the edge of the central hole, i.e. have no right-angled edges.
    Type: Application
    Filed: February 14, 2001
    Publication date: October 11, 2001
    Inventors: Christian Walsdorff, Otto Hofstadt, Raimund Felder, Ruprecht Meibner, Klaus Harth